Mouth (Oral Cavity)

Question 1

Mouth (Oral Cavity)

Answer 1

1. Oral vestibule
2. Oral cavity proper
3. Teeth
4. Tongue
5. Salivary Glands (Accessory Digestive Organs)

Question 2

• Space bounded anteriorly by lips and cheeks
• Posteriorly by teeth and gums

Answer 2

Oral vestibule

Question 2

• Space bounded by gums and teeth
• Floor is the tongue
• Roof is the hard and soft palate

Answer 2

. Oral cavity proper

Question 3

o The deciduous teeth erupt on the average between 6 and 24 months after birth and are usually shed between the ages of 6 and 12
o The deciduous set consists of 20 teeth, 5 in each quadrant: 2 incisors, 1 canine, and 2 molars.

Answer 3

a. Deciduous teeth, or temporary (milk)

Question 3

o Eruption of the third molars, or wisdom teeth, is delayed until after the age of 18
o There are 32 permanent teeth in a full set, 8 in each quadrant: 2 incisors, 1 canine, 2 premolars, and 3 molars.

Answer 3

Permanent teeth

Question 4

• Organ for speech and mechanical digestion of food
  Contain Papillae:
  a.Vallate
  b. Foliate
  c.Fungiform
  d. Filiform

Answer 4

Tongue

Question 4

– largest; sulcus terminalis that will dividing the tongue into anterior 2/3 and posterior 1/3

Answer 4

Vallate

Question 5

Nerves of the tongue

Answer 5

a. General sensory – touch
b. Special sensory – taste
c. Motor

Question 6

• lingual (CN V) (anterior 2/3 of tongue)
• Glossopharyngeal (CN IX post. 1/3 of tongue)
• Vagus (CN X) epiglottic area

Answer 6

General sensory – touch

Question 6

• anterior 2/3 - chorda tympani from VII
• posterior 1/3 - glossopharyngeal (CN IX)

Answer 6

Special sensory – taste

Question 6

• to intrinsic and extrinsic muscles of tongue – hypoglossal

Answer 6

Motor

Question 7

• secretions (salivary amylase) poured in the oral cavity starts digestion of carbohydrates.
  a. Parotid
  b. Submandibular
  c. Sublingual

Answer 7

Salivary Glands (Accessory Digestive Organs)

Question 7

o Largest
o lies on the posterior border of ramus of mandible
o purely serous
o with stensen’s duct that open into oral vestibule opposite the upper 2nd molar tooth
o secretion is purely serous
o duct: Stensen’s
o viral inflammation: mumps or parotitis
o important structure embedded: facial nerve

Answer 7

Parotid

Question 8

o second largest
o mixed serous and mucous gland, more of serous
o duct: Wharton’s -

Answer 8

Submandibular

Question 9

opens into the vestibule of mouth opposite upper second molar tooth

Answer 9

Stensen’s

Question 10

which opens at sublingual papillae

Answer 10

Wharton’s

Question 11

o smallest of 3 salivary glands
o mixed serous and mucous but more of mucous
o Ducts
 Rivinus
 Bartholins

Answer 11

Sublingual

Question 12

• small opens at summit of sublingual fold

Answer 12

Rivinus

Question 13

• large; opens into sublingual papillae

Answer 13

Bartholins